Legrand RFB4 - Manual

Adjusting Screws
RFB Recessed Floor Box
I N S T A L L A T I O N I N S T R U C T I O N S
Installation Instruction No.: 1 002 639 R5 – Updated June 2012
Products Covered: RFB4, RFB4-CI-1, RFB4-CI-NA, RFB4-4DB, RFB4-SS
IMPORTANT: Please read all instructions
before beginning.
Step 1 Determine box location and conduit layout. Remove
knockouts and attach proper conduit adapters (sold
separately) to steel base. Step 2 Slip housing over base. Using the adjusting screws provided
and adjust box so that top is 1/16" [1.6mm] below screed line.
RFB4 Recessed Floor Box – Before Concrete Pour:
Compartment A
Compartment B Step 4
Step 3
Tunnel Blocks
Step 3 Insert combination bracket inside of housing. Mount to
base with four #10-24 x 5/8" [15.9mm] Phillips drive machine
screws. If compartments (A) and (B) are used for different services,
then one or both tunnel blocks must be pressed into the
combination bracket to block the passage of wires between the two
compartments. If pass-through is required between compartments
(A) and (B), tunnel blocks are not needed. Pass-through is available
only between compartments (A) and (B).
Step 4 Secure box to subfloor using wire or nails through the slot adjacent
to the adjusting screws. Once positioned, connect conduit to
adapters.
Step 5 Leave receptacle brackets in shrink wrapping and inside box until
concrete is set and receptacles are ready to be installed.
Step 6 Insert unused tunnel blocks into fingers of combination bracket.
Place brackets in box and insert mudcap on top of blocks.
WARNING: Pour concrete to 1/16" [1.6mm] above box
housing. Pours of 1/4" [6.4mm] or more over
box housing will make it difficult to breakout
the mudcap and cause excessive spalling.
Legrand/Wiremold electrical systems conform to and should be properly
grounded in compliance with requirements of the current National
Electrical Code or codes administered by local authorities.
All electrical products may present a possible shock or fire
hazard if improperly installed or used. Legrand/Wiremold electrical
products may bear the mark of a Nationally Recognized Testing
Laboratory (NRTL) and should be installed in conformance with current
local and/or the National Electrical Code.